<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title>购物车</title>
	<%@include file="/pages/common/head.jsp"%>
</head>
<body>

<div id="header">
	<img class="logo_img" alt="" src="static/img/logo.gif" >
	<span class="wel_word">购物车</span>
	<%@ include file="/pages/common/login_success_menu.jsp"%>
</div>

<script type="text/javascript">
	$(function () {
		// 给删除绑定单击事件
		$("a.deleteItem").click(function () {
			return confirm("你确定要删除[" + $(this).parent().parent().find("td:first").text() + "]吗?")
		})

		// 给清空购物车绑定单击事件
		$("#clearCart").click(function () {
			return confirm("你确定要清空购物车么?")
		})

		// 给输入框绑定onchange 内容发生改变事件
		$(".updateCount").change(function () {
			// 获取商品名称
			var name = $(this).parent().parent().find("td:first").text();
			var id = $(this).attr('bookId');
			// 获取商品数量
			var count = this.value;
			if ( confirm("你确定要将【" + name + "】商品修改数量为：" + count + " 吗?") ) {
				//发起请求。给服务器保存修改
				location.href = "http://localhost:8080/book/cartServlet?action=updateCount&count="+count+"&id="+id;
			}
			else {
				// defaultValue 属性是表单项 Dom 对象的属性。它表示默认的 value 属性值。
				this.value = this.defaultValue;
			}

		})
	})

</script>


<div id="main">

	<table>
		<tr>
			<td>商品名称</td>
			<td>数量</td>
			<td>单价</td>
			<td>金额</td>
			<td>操作</td>
		</tr>

		<%--		如果购物车非空才输出下面页面--%>
		<c:if test="${not empty sessionScope.cart.items}">

			<c:forEach items="${sessionScope.cart.items}" var="entry">
				<tr>
					<td>${entry.value.name}</td>
					<td>
						<input class="updateCount" style="width: 80px"
							   bookId="${entry.value.id}"
							   type="text" value="${entry.value.count}">
					</td>
					<td>${entry.value.price}</td>
					<td>${entry.value.totalPrice}</td>
					<td><a class="deleteItem" href="cartServlet?action=deleteItem&id=${entry.value.id}">删除</a></td>
				</tr>
			</c:forEach>

		</c:if>

		<c:if test="${empty sessionScope.cart.items}">
			<tr>
				<td colspan="5"><a href="index.jsp">亲,当前购物车为空!,请返回首页</a></td>
			</tr>
		</c:if>
	</table>

	<c:if test="${not empty sessionScope.cart.items}">
		<div class="cart_info">
			<span class="cart_span">购物车中共有<span class="b_count">${sessionScope.cart.totalCount}</span>件商品</span>
			<span class="cart_span">总金额<span class="b_price">${sessionScope.cart.totalPrice}</span>元</span>
			<span class="cart_span"><a id= "clearCart" href="cartServlet?action=clear">清空购物车</a></span>
			<span class="cart_span"><a href="orderServlet?action=createOrder">去结账</a></span>
		</div>
	</c:if>


</div>

<%@include file="/pages/common/footer.jsp"%>
</body>
</html>